Karl Holtz ( 1899 - 1978 ) was a German painter. Karl Holtz s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 198.65 USD for Défilé des Spartakiste in 2009 to 1105.62 USD for Spandau (Stadtlandschaft) in 2014 , based on the size and medium of the artwork.